Water deficit and seasonality study on essential oil constituents of Lippia gracilis Schauer germplasm

• Autor(a) principal: Cruz, Elizangela Mércia de Oliveira
• Data de Publicação: 2014
• Outros Autores: Pinto, Jéssika Andreza Oliveira, Fontes, Saymo Santos, Arrigoni-Blank, Maria de Fátima, Bacci, Leandro, Jesus, Hugo César Ramos de, Santos, Darlisson de Alexandria, Alves, Péricles Barreto, Blank, Arie Fitzgerald
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: https://ri.ufs.br/handle/riufs/1594
• topic: Water deficit; Seasonality; Essential oil; Lippia gracilis; Germplasm; Germoplasma; Sasonalidade; Óleos essenciais

The aim of this study was to analyze the chemical composition of the essential oil from leaves of Lippia gracilis genotypes, in the dry and rainy seasons, and with and without irrigation. The extraction of essential oil was realized by hydrodistillation in a Clevenger apparatus. The chemical composition analysis was performed using a GC-MS/FID. The leaves of the L. gracilis genotypes provide essential oil with content between 1.25% and 1.92% in the rainy season and 1.42% and 2.70% in the dry season; when irrigation was used the content was between 1.42% and 2.87%, without irrigation contents were between 1.60% and 3.00%. The chemical composition of L. gracilis showed high levels of terpenes. The major constituent of genotypes LGRA-106 was thymol and carvacrol was the major constituent for the other genotypes. Concentrations showed little variation between seasons, demonstrating the stability of the chemical composition of L. gracilis even with different climatic conditions.